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가열 및 저장중 고추 oleoresin의 지질산화 및 항산화성
배태진,김현주,강훈이,최옥수 여수대학교 1994 論文集 Vol.8 No.-
Changes of lipid oxidation and antioxidative activity in modified oleoresin during heat treatment and storage were investigated. Lipid oxidation occurred somewhat to oleoresin red pepper after heat treatment for 5 hours at 150℃ and 200℃, whereas in the heat treatment at 50℃ and 100℃, occurred in little. During heat treatment for 5 hours at 100℃, oleoresin red pepper had a moderate antioxidation effect, but its antioxidation effect at 200℃ was not shown due to degradation of capsaicin. And oleoresin red pepper greatly inhibited the oxidation of soybean oil during storage at 25℃ and 40℃.
혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement
임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1
Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.
Ok-Chul Chung,Hong-Gyu Kang,Tae-Woong Bae,Hyeon-Jin Sun,Jeong-Keun Choi,Pyung Ok Lim,Hyo-Yeon Lee 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
Daily shedding pattern and longevity of pollen are important consideration for the evaluation of gene flow of transgenic plants. During the day, the pollen shedding pattern of zoysiagrass was determined in the lawn by using a device to collect airborne pollen on a glass slide, resulting that the pollen grains were released predominantly between 7:00 and 9:00. The result was also supported by in vitro pollen germination test, which was performed with pollens collected from 1:00 through 24:00 at 1h interval. Influence of temperature and humidity on pollen longevity was determined by germinating pollen at 25°C after incubating them for 10, 30, 60, and 180 min under different temperatures and humidity with pollen of zoysiagrass that opened freshly at about 9:00. The result showed that pollen longevity of zoysiagrass was sensitive to change of temperature and humidity and longest under the temperture and humidity of 15-20°C and 80-99%, respectively. Under natural conditions with the same method as upper controlled conditions, was determined pollen longevity. Under sunny atmospheric conditions, pollen longevity decreased to 20% in 60 min, with a complete extinction in 120 min. Under cloudy atmospheric conditions, pollen remained viable up to 450 min, with about 20% longevity after 360 min. No significant difference was found between GM and non-GM plants in their pollen longevity.
Jin, Byung-Ok,Lee, Min-Ho,Jo, Jin-Seok,Jung, Ho-Jun,Kim, Chi-Ho,Kim, Hyeon-Tae Korean Society for Agricultural Machinery 2017 바이오시스템공학 Vol.42 No.2
Purpose: In this study, we attempted to analyze, by using a high-speed camera, the cutting shape as a function of cutting speed and feed rate. We compared the differences in cutting shape between domestic and foreign combines. Methods: Experiments were performed using plastic straws, and the results of two combine cutting blades, one from the Daedong Industry and one from Kuboda, were compared. The quality and performances of cutting were measured at three cutting positions: center and 68 cm to the left and right of the center. The feed rates were 0.6 m/s, 1.1 m/s, 1.6 m/s, and the cutting speeds were 600 RPM, 990 RPM, 1,380 RPM. For each speed, the cutting shape was measured three times, and the entire procedure was also repeated three times. Results: In the experiments, the domestic cutting blade achieved better results than the Japanese cutting blade. These results were obtained by studying the combination of feed rate and cutting speed, with the domestic combine attaining approximately 80% performance of the Japanese combine. We believe that additional data analysis is required, obtained from field experiments. Conclusions: The domestic cutting knives achieved better results than the Japanese cutting knives. These results are estimated from experiments conducted with different feed rates and cutting speeds; an in-depth analysis will require experiments in the real field with actual combines and a combination of multiple variables. Repeating the investigation on the length differences, broken and cut angle with various combinations of feed rate and cutting speed, will surely help to find the optimal cutting speed.
Jin, Hyeon-Ok,Lee, Yun-Han,Park, Jin-Ah,Lee, Ha-Na,Kim, Jin-Hee,Kim, Ji-Young,Kim, BoRa,Hong, Sung-Eun,Kim, Hyun-Ah,Kim, Eun-Kyu,Noh, Woo Chul,Kim, Jong-Il,Chang, Yoon Hwan,Hong, Seok-Il,Hong, Young-J Springer-Verlag 2014 JOURNAL OF CANCER RESEARCH AND CLINICAL ONCOLOGY Vol.140 No.12
<P>Piperlongumine (PL) has been shown to selectively induce apoptotic cell death in cancer cells via reactive oxygen species (ROS) accumulation. In this study, we characterized a molecular mechanism for PL-induced cell death.</P>
SP600125 negatively regulates the mammalian target of rapamycin via ATF4-induced Redd1 expression
Jin, Hyeon-Ok,Seo, Sung-Keum,Woo, Sang-Hyeok,Kim, Eun-Sung,Lee, Hyung-Chahn,Yoo, Doo-Hyun,Choe, Tae-Boo,Hong, Seok-Il,Kim, Jong-Il,Park, In-Chul Elsevier 2009 FEBS letters Vol.583 No.1
<P><B>Abstract</B></P><P>SP600125 (SAPK Inhibitor II) is reported to function as a reversible ATP competitive inhibitor of c-Jun N-terminal kinase (JNK). In the present study, we show that SP600125 induces a dose-dependent decrease in mTOR activity, as assessed by reduced phosphorylation of the downstream targets S6K1 and S6, and a significant increase in the expression of Redd1. Knockdown of Redd1 expression by siRNA resulted in a recovery of decreased S6 phosphorylation by SP600125. Overexpression of ATF4 upregulated the expression of Redd1, while suppression of ATF4 expression by siRNA enhanced the level of S6 phosphorylation by downregulating the SP600125-induced increase in Redd1 expression. Together, these results indicate that SP600125 inhibits mTOR activity via an ATF4-induced increase in Redd1 expression.</P>